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Finding the Fourth Proportional to 821,452.40, 1,230,335.40 and 673,996.40

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Solution

The fourth proportional to 821,452.40, 1,230,335.40 and 673,996.40 is: 1,009,482.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,452.40 : 1,230,335.40 = 673,996.40 : x
  2. Step 2: Convert to fraction form
    821,452.40/1,230,335.40 = 673,996.40/x
  3. Step 3: Cross multiply
    821,452.40x = 1,230,335.40 × 673,996.40
  4. Step 4: Simplify right side
    821,452.40x = 829,241,630,392.56
  5. Step 5: Solve for x
    x = 829,241,630,392.56/821,452.40
  6. Step 6: Final answer
    x = 1,009,482.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.